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All Journal Seminar Nasional Teknik Kimia Kejuangan Majalah Ilmiah Pengkajian Industri Jurnal Energi dan Lingkungan (Enerlink)
Adiarso Adiarso
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Aerospace Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Transportation

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Pengaruh Kondisi Operasi pada Pembuatan Green Diesel dari MinyakNyamplung dengan Katalis NiMo/Al2O3 dan NiW/Al2O3 Sumbogo Murti S.D.; Joni Prasetyo; Galuh Wirama M; Adiarso Adiarso
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

The attractiveness of biodiesel as an alternative fuel compared to fossil fuels because it has many advantages such as the availability of abundant raw materials, more environmentally friendly, high combustion efficiency, low sulfur content, high cetane number and biodegradability. Making biodiesel from callophylum inophyllum oil has been done through the hydrogenation process. Callophylum inophylum oil was treated via degumming and neutralisation to remove all impurities before hydroprocesing. Hydroprocessing was carried out in a 500ml autoclve at 30 – 50 MPa of initial hydrogen pressure, 300 – 400 oC of reaction temperature and equiped with stirrer and cooling sistem. NiMo/Al2O3 or NiW/Al2O3 was activated with CS2 mixture at 370 oC prior to the reaction. Some physical and chemical properties of the catalytic hydroprocessing product have been investigated in accordance to ASTM standard. The measurement result of product varies according to the operation condition. The result showed that calophyllum inophullum oil can be used as raw material for green diesel over NiMo/Al2O3 and NiW/Al2O3. Sulfided NiMo/Al2O3 catalysts are preferred due to high diesel yield.
Investigasi Sifat Bahan Bakar Campuran Disel Minyak Bumi dan Biodisel Dari Minyak Kelapa Sawit, Minyak Jarak dan Minyak Kanola S.I Heriyanti; Sumbogo Murti S.D; Adiarso Adiarso
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Biodiesel is a renewable fuel derived from various biomass which is very abundant in Indonesia. The physical properties of biodiesel are similar to those of petroleum diesel, but the fuel significantly reduces green house gas emission and toxic air pollutants. However, there are some disadvantages of biodiesel such as vulnerable to water contamination, lower energy content as well as having problems at low temperatures. Biodiesel can be blended and used in many different concentrations. Indonesia government has launched a policy of biodiesel mix gradually to 30% in 2020. To ensure that policy implementation, a study of blending biodiesel from Palm oil, Jatropha oil and Canola oil has been carried out with various compositions. Some thermophysical properties of the mixture have been investigated in accordance to ASTM standard. The measurement result of biodiesel blends fuel varies according to the mixture composition and origin of biodiesel. Generally, the properties of Palm oil and Canola oil biodiesel blend fuel can meet the standards that apply in Indonesia but biodiesel from Jatropha oil cannot meet the quality standards for oxidation stability. Antioxidant can be used to improve the oxidation stability of biodiesel and its mixture.
PENGARUH PENAMBAHAN SULFUR PADA PROSES PENCAIRAN BATUBARA BANKO Herman Hidayat; Adiarso Adiarso
Jurnal Energi dan Lingkungan (Enerlink) Vol. 2 No. 2 (2006)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/elk.v2i2.1521

Abstract

The effect of adding sulfur in Central Banko coal liquefaction is examined usingautoclave reactor with limonite catalyst from Soroako, at 450oC, H2 initialpressure = 9 Mpa, holding time = 60 minutes, and S/Fe ratio varies from 1, 2, 3dan 6. It is found that there is significant increase in distillates yield by 53,81% forthe increase of S/Fe ratio from 1 to 2, and at the same time CLB decreases from53,5% to 29,47%. This is because the amount of pyrrhotite for S/Fe ratio =2 ishigh and enough to promote cracking to convert coal to distillates or oil. For S/Feratio = 3, the increase of distillates or oil yield is not significant, so does for S/Fe= 6. This concludes that adding more sulfur in Central Banko coal liquefactionusing limonite catalyst from Soroako is not effective and therefore does notinfluence much to the oil yield. This is because the particle size and amount ofpyrrhotite already achieves equilibrium for S/Fe ratio = 2. The changing of S/Feratio does not give much effect to the yields of H2O, CO+CO2, C1~C4,andhydrogen consumption as well..Kata Kunci : limonit Soroako, rasio S/Fe,yield distilat, yield CLB, pirhotit, yieldH2O, yield CO+CO2, yield C1~C4, konsumsi gas hidrogen
PERBANDINGAN KARAKTERISTIK PENCAIRAN BATUBARA BANKO DAN TANITO HARUM SEBAGAI EFEK KERJA KATALIS LOGAM TRANSISI Muhammad Hanif; Adiarso Adiarso
Jurnal Energi dan Lingkungan (Enerlink) Vol. 4 No. 2 (2008)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/elk.v4i2.1535

Abstract

Characterization of two oil derived from Indonesian lower-rank coals from SouthBanko (SB) and Tanito Harum (TH) were carried out after liquefied in thepresence of nickel/molybdenum (Ni/Mo) and cobalt/ molybdenum (Co/Mo)catalysts without added solvent. Both coals treated with Ni/Mo have highconversion than those treated with Co/Mo when reacted with hydrogen withinitial pressure of 6MPa at 400oC for 30 minutes. However, with sulfur (CS2)added, the difference between Ni/Mo and Co/Mo catalysts for conversion of bothcoals is eliminated. SB-coal exhibits better conversion than that of Ni/Mo orCo/Mo-treated TH-coal. This probably due to the structure of TH coal is morecondensed and stronger than that of SB coal. The effect of single metal (Ni, Coor Mo separately) could explain the different conversion between Ni/Mo andCo/Mo with and without sulfur and also the difference between SB and TH whenthey reacted with Ni/Mo and Co/Mo with and without added sulfur. The order ofeffectiveness for SB, when it reacted in the absence of sulfur, was decreasedfrom Ni>Mo>Co. But the order was shifted to Mo>>Ni>Co. The similar order wasalso found for TH coal under the same conditions. The study also shows thatreactivity of SB coal was higher than that of TH coal. This results in better yield offuels. Fortunately, the TH coal is still potentially developed for introducing theefficient process of sub bituminous coal liquefaction in Indonesia.Kata Kunci: coal liquefaction, katalis Ni/Mo, Banko, Tanito Harum
KARAKTERISTIK PROSES HIDROKONVERSI KATALITIK DENGAN BAHAN BAKU BITUMEN Yusnitati Yusnitati; Muhammad Hanif; Adiarso Adiarso
Jurnal Energi dan Lingkungan (Enerlink) Vol. 6 No. 2 (2010)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/elk.v6i2.1556

Abstract

The effects of bitumen types in a hydro-conversion catalytic process to producesyntethic liquid fuels was investigated. Three samples of natural solid bitumenobtained from three different sampling points in Riau Province are used in thisstudy. Preliminary technical feasibility of the natural solid bitumen as a feedstockof synthetic fuel oil using this process is also investigated. Experimental runs arecarried out using a 1 liter stirred batch autoclave reactor under the standardconditions: reaction temperature of 450oC, initial hydrogen pressure of 12 MPafor 1 hour and atomic ratio of sulfur to iron at 2.0. This process condition issimilar to direct coal liquefaction process using heavy oil solvent produced fromBench Scale Unit (BSU) 100 kg/hour input in Takasago, Japan. The resultsindicate that the oil yield increases with the decrease of liquid bottom yield. TotalCO+CO2 and hydrocarbon gases products are almost equal at all bitumensamples. Due to their high ash content, the oil yield (LO, MO and HO) of bitumensamples relatively lower than the oil yield of coal liquefaction process. It was alsofound that O/C and H/C atomic ratio in bitumen samples vary significantly withtheir sampling point, but the H/C ratio of bitumen relatively higher than typicalcoal. The higher of H/C ratio, the easier of bitumen to be converted to syntheticfuel oil and leading to the more efficiently use of gaseous hydrogen. Inconclusion, the natural solid bitumen has a possibility as a feedstock of syntheticfuel oil, if it is fed to the process in the form of a dried-ash-free-bitumen (hyperbitumen).Kata kunci: bitumen, hidrokonversi katalitik, BBM sintetis
ANALISIS KEEKONOMIAN PEMBANGUNAN PEMBANGKIT LISTRIK TENAGA BIOGAS DARI POME DENGAN CONTINUOUS STIRRED TANK REACTOR (CSTR) Agus Sugiyono; Adiarso Adiarso; Ratna Etie Puspita Dewi; Yudiartono Yudiartono; Agung Wijono; Niken Larasati
Majalah Ilmiah Pengkajian Industri Vol. 13 No. 1 (2019): Majalah Ilmiah Pengkajian Industri
Publisher : BRIN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/mipi.v13i1.3232

Abstract

Limbah cair kelapa sawit atau dikenal dengan POME (palm oil mill effluent) dapat diproses menjadi biogas sebagai bahan bakar untuk pembangkit listrik. Produksi POME saat ini dapat digunakan untuk pembangkit listrik tenaga biogas (PLTBg) dengan kapasitas mencapai 153,4 MW yang sebagian besar berada di wilayah Sumatera. Salah satu pabrik kelapa sawit (PKS) yang berpotensi untuk pembangunan PLTBg adalah PKS Sei Pagar milik PTPN V Pekanbaru. Studi ini bertujuan untuk melakukan analisis keekonomian pembangunan PLTBg. PLTBg didesain dengan kapasitas 700 kW dengan menggunakan biodigester jenis continuous stirred tank reactor (CSTR). Listrik yang dihasilkan akan dijual ke PLN dengan harga jual sebesar 85% biaya pokok penyediaan (BPP) pembangkitan wilayah Riau sebesar 1.249,5 Rp/kWh. Hasil perhitungan keekonomian menunjukkan bahwa biaya investasi mencapai 26,3 milar Rupiah dengan skema 70% pinjaman dari bank dan sisanya 30% dengan modal sendiri (equity). Biaya opersi dan perawatan mencapai 2,3 miliar Rupiah setiap tahun. Pembangunan PLTBg layak untuk dilaksanakan dengan nilai IRR sebesar 11,44%, waktu pengembalian modal selama 7 tahun 11 bulan, dan NPV sebesar 1.1 miliar Rupiah.
Co-Authors Agung Wijono Agus Sugiyono Galuh Wirama M Herman Hidayat Joni Prasetyo Muhammad Hanif Niken Larasati Ratna Etie Puspita Dewi S.I Heriyanti Sumbogo Murti S.D Sumbogo Murti S.D. Yudiartono Yudiartono Yusnitati Yusnitati